Plumb bob string



FIG. 1 is a front, top and side perspective view of the plumb bob string embodying the design of the present invention;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is a side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Portions of the string have been removed for ease of illustration. 

The ornamental design for a plumb bob string, as shown and described. 